The development prospect of steel structure, the development status and prospect of steel structure

Compared with traditional concrete, steel has the characteristics of high strength, high toughness and good ductility, which will bring significant advantages of steel structure buildings in the fields of structural performance, economic performance and environmental performance. In particular, the advantages of environmental protection coincide with the idea of advocating building energy conservation and environmental protection in China. GF believes that with the strong support of policies, the demand for residential steel structures in the construction of green buildings and affordable housing is growing, and the residential steel structure industry is at the point of accumulation.

The high cost causes the lag in promotion.

Steel structure housing in the western developed countries has a hundred years of development history, due to the incomparable advantages of other structures, steel structure to the housing industry has brought a deep revolution, from the design, construction, to a series of new materials have been revolutionized, so it represents the future of the development direction of housing in the international scope.

At present, China's residential steel structure accounts for no more than 5%, compared with almost more than 50% in foreign developed countries, China is still in its infancy, and there is still a lot of room for development of residential steel structure.

Steel structure has a variety of advantages such as energy saving, environmental protection, and earthquake resistance, but it is difficult to promote it in China in recent years. One of the key reasons lies in the cost, and the reason for the high cost is that this new form of building is in the early stage of development, and the market for various supporting products is not mature, so it is high. According to the literature studied by Chinese scholars, the economic cost of building residential steel structures is 13% higher than that of ordinary buildings.

Policies are expected to be introduced one after another.

Since the Third Plenary Session of the 18th CPC Central Committee, we have vigorously advocated green and low-carbon development, vigorously developed green buildings and promoted the industrialization of buildings have become important tasks for the development of the current construction industry. The Ministry of Finance and the Ministry of Housing and Urban-Rural Development have clearly required that by 2020, green buildings will account for more than 30% of new buildings, and the level of energy resource consumption in the process of building construction and use will be close to or reach the level of developed countries at this stage.

Prospective Industry Research Institute released the "China Steel Structure Industry Market Prospect and Investment Planning Analysis Report" analysis: China's steel structure in energy, transportation, petrochemical, water conservancy, machinery, housing and urban and rural construction has many typical examples of promotion and application, but mainly to solve the reinforced concrete building is difficult to achieve or cost higher large-span, towering, heavy-duty and light enclosure system, there is still a lot of room for development.

The application of steel structure in the future is very extensive, and now the workshop of the new industrial plant is made of steel structure, and the previous prefabricated and now the workshop can not meet the advantages of low cost, convenient construction, short construction period and large span. At the same time, the development of high-rise super high-rise buildings such as the Bird's Nest and high-rise buildings has also accelerated and affected the development of steel structures. Now our industrial buildings are facing the stage of development and replacement.

The outlook is very positive.

Steel structure is a green and recyclable material, in the view of Suzhou Jiayougong in the future construction application will be more and more extensive, especially the new steel structure residential buildings, etc., the future prospects are considerable.

From the early 80s to the end of the 90s of the 20th century, the amount of money used just now was about 300,000 tons, and the capital was 60 billion yuan. Representative works: Shanghai Jinmao Building, the world's third tallest building of 421m, Shenzhen SEG Building, which is at the international leading level; Domestic steel, domestic design, manufacturing and construction of 200m high Dalian World Trade Center.

However, there are still many problems in the steel structure industry in terms of production capacity and structure, industry standards and norms, enterprise management level and technical level, the quality of employees and the connection of the entire industrial chain, such as: the defects of production capacity and structure, industry standards and norms are not perfect, industry management can not keep up with the pace of development, the promotion and application of new technologies, new processes and new materials are still insufficient, and the quality of employees should be further improved.

Foreign rice money, light steel structure has become the main form of building structure in developed countries. In recent years, the increase in the world's total steel volume and the decline in international steel demand have prompted countries to expand the scope of use of that structure, and the proportion of steel used in construction in various countries has increased significantly, generally about 30 percent. The development of foreign steel industry is earlier, which provides a rich material base for construction steel.

There is a consensus on the superiority of the steel structure itself. **Strict requirements for environmental protection and full use of resources, objectively out of business owners, architects and structural engineers choose steel structures. Mature supporting technology and bulldozing have promoted the anti-war in the steel structure industry.

Including a variety of design software, standard specifications, a variety of high-performance steel, welding materials, connection materials, fireproof materials and a variety of equipment and tools.

Steel structure building in Europe and the United States and Japan so popular, in addition to the steel industry in these countries is very developed, in the quantity to meet the demand for steel structure building provides a guarantee, iron and steel enterprises through the development of information production level to meet the requirements of modern construction for steel material varieties and self-quantity, to promote the technological progress of the structure of the building is particularly important.

Overall: China's steel structure industry is a growing sunrise industry, and the development prospects are very good.

In industrially developed countries, such as the United States, Japan, the United Kingdom, etc., steel structure housing is more popular, accounting for more than 40% of the residential market share, and a considerable scale of industrialized steel structure housing system has also been formed; China's steel structure housing accounts for less than 1% of the total number of residences. The steel structure building has the advantages of high strength, light weight, good seismic performance, low foundation cost, large building use area, high building quality, suitable for industrialization and standardized production, not affected by the construction season, low comprehensive cost, etc., and is known as the representative of green building. The Prospective Industry Research Institute believes that in recent years, the state has successively issued policies, such as the "Twelfth Five-Year Plan for the Development of the Construction Industry" and the "Guiding Opinions on Resolving the Contradiction of Serious Overcapacity", all of which point out that it is necessary to increase the proportion of steel structures in the construction field and vigorously develop green buildings.

At the same time, the scale of real estate investment and the construction area of commercial housing have maintained rapid growth. This has a certain positive impact on the development of China's steel structure industry. From January to October 2013, China's commercial housing sales area was 959.31 million square meters, if 5% of them are steel structures, calculated according to 50 kilograms of square meters of steel, the resulting demand for steel structures is about 24 million tons, which is a huge market.

In the future, with the continuous growth of real estate investment in China, the proportion of residential steel structure will continue to increase, and the market demand for steel structure will expand considerably.

<> steel structure building prospect is to combine the current situation to elaborate, the difference in each detail will bring different endings, to understand the details in order to do better. Zhongda Consulting will introduce to you the prospect of steel structure building.

From the development trajectory of steel structure buildings in developed countries, combined with the actual situation in China, it is not difficult to see that the development prospects of steel structure in China are bright, but there will be many characteristics different from those of developed countries. Therefore, the prospect is bright, because the first has begun to attach great importance to the development of steel structure building, in 1998 the steel structure technology as a key promotion of new technology, in 1999 the establishment of the national construction steel leading group, headed by the Ministry of Construction Ye Rutang. At the same time, the expert group is divided into nine topics to study the application of steel structures in the field of construction.

At present, the amount of construction steel used in developed countries is 45 55% of its steel output, while the amount of construction steel used in China accounts for only about 20% of the total output. China's annual steel output has exceeded 100 million tons, if calculated according to this ratio, China's construction steel has about 30 million tons of development space.

Therefore, it will have its own characteristics, because China's national conditions are different from those of western developed countries, the labor force is relatively low, the country is not rich, and the steel structure with low cost and slightly lower technical content will be given priority development. In the coming period, concrete-filled steel tube structures and light steel structures will develop rapidly.

Compared with other structures, the concrete-filled steel tube structure has the characteristics of high bearing capacity, superior plasticity and seismic performance, material saving and simple construction. These features are particularly prominent in high-rise buildings, where China is already a leader.

In addition to the widespread application of light steel structure in large-span single-storey houses, it will be widely used in residential buildings and small and medium-sized multi-storey public buildings in the future. According to statistics, in the second few years of the 20 th century, China's urban residential construction developed rapidly with an annual completed area of 100 million square meters and a total output value of 600 billion yuan (about 9 percent of GDP), and the housing industry became a new growth point in the national economy across the century. With its advantages of light structural components, high degree of prefabrication, easy implementation of design standardization, stereotyping, construction mechanization, factory assembly production, and short construction period, the steel structure residential building system has shown its broad application and development prospects in the building materials market, and has become one of the main systems to replace the existing small brick houses; Small and medium-sized buildings are large and wide, and the development of light steel structures is of great significance to our country, which is very short of resources and energy.

Compared with traditional concrete, steel has the characteristics of high strength, high toughness and good ductility, which will bring significant advantages to steel structure buildings in the fields of structural performance, economic performance and environmental performance. In particular, the advantages of environmental protection coincide with the concept of building energy conservation and environmental protection advocated in China. GF** believes that with the strong support of the policy, the demand for residential steel structures in the construction of green buildings and affordable housing is increasing day by day, and the residential steel structure industry is at an explosive accumulation point.

The high cost leads to the lagging promotion of steel structure housing in western developed countries for a hundred years. With its incomparable advantages, the steel structure has brought a profound revolution to the housing industry, and has undergone revolutionary changes in the design of pure permeability, construction and the use of a series of new materials, representing the development direction of future housing in the international scope. At present, the proportion of residential steel structure in China is less than 5%, compared with the proportion of almost 50% in developed countries, China is still in its infancy, and there is still a lot of room for development of residential steel structure.

Steel structure has many advantages, such as energy saving, environmental protection, earthquake resistance, etc., but in recent years, it is difficult to popularize in the country. One of the key reasons is the cost, the reason for the high cost is that this new building form is in the early stage of development, and the market for various supporting products is not mature, so it is higher to do the front. According to the literature studied by Chinese scholars, the economic cost of building a residential steel structure is 13% higher than that of ordinary buildings.

Steel structure building is a new type of energy-saving and environmentally friendly building system, known as one of the "green buildings" in the 21st century, is an energy-saving and environmentally friendly, recyclable building structure. What is the development trend of steel structure building? The following is an introduction to the development trend of steel structure buildings brought by the construction network for reference.

The steel structure is an environmentally friendly house, and the steel structure is in line with the concept of sustainable development" - the steel structure in the 21st century will occupy the vast construction market. Under the background of China's current vigorous promotion of housing industrialization, the steel structure system will become the mainstream of the residential structure system.

From the design, construction, steel structure industrial production point of view, more and more iconic steel structure buildings, has been enough to prove that China's steel structure building from design to construction, or from design to the industrial production and processing of steel structure components, the quality of professional steel structure designers in practice has been continuously improved, a number of distinctive and powerful professional research institutes, design institutes, construction units, construction supervision units are becoming more and more mature, professional, technical, scale more perfect.

From the perspective of the application scope of steel structure, China's steel structure buildings are developing from high-rise heavy-duty and space-wide large-span industrial and public building steel structures to living. In recent years, with the development of urban construction and the increase of high-rise buildings, China's steel structure has developed very rapidly. In fact, China's steel structure housing started very late, only after the reform and opening up, the introduction of some low-rise and multi-storey steel structure housing from abroad, so that we have the opportunity to learn and learn from.

In the 90s of the 20th century, individual foreign companies established multi-storey steel structure office and residential buildings in Beijing, Shanghai and other places in order to promote their products. Large-scale research and development, design and manufacturing, construction and installation of steel structure housing have only been developed in recent years.